diff --git a/arm_compute/runtime/CL/functions/CLPriorBoxLayer.h b/arm_compute/runtime/CL/functions/CLPriorBoxLayer.h
index 9129bfd..9b36c9e 100644
--- a/arm_compute/runtime/CL/functions/CLPriorBoxLayer.h
+++ b/arm_compute/runtime/CL/functions/CLPriorBoxLayer.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020 Arm Limited.
+ * Copyright (c) 2018-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -43,6 +43,15 @@
     CLPriorBoxLayer();
     /** Set the input and output tensors.
      *
+     * Valid data layouts:
+     * - NHWC
+     * - NCHW
+     *
+     * Valid data type configurations:
+     * |src0     |src1     |dst      |
+     * |:--------|:--------|:--------|
+     * |F32      |F32      |F32      |
+     *
      * @param[in]  input1 First source tensor. Data types supported: F32. Data layouts supported: NCHW/NHWC.
      * @param[in]  input2 Second source tensor. Data types and layouts supported: same as @p input1
      * @param[out] output Destination tensor. Output dimensions are [W * H * num_priors * 4, 2]. Data types and layouts supported: same as @p input1